Pen



FIG. 1 is a front elevational view of a pen showing my new design;

FIG. 2 is a right side elevational view, the left side being a mirrorimage thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view with the cap member removed forconvenience of illustration;

FIG. 7 is a right side elevational view of FIG. 6, the left side being amirror image thereof;

FIG. 8 is a rear elevational view of FIG. 6; and,

FIG. 9 is a top plan view of FIG. 6.

The ornamental design for a pen, as shown and described.